Gustavus & Louise Pfeiffer
501(c)(3) Donations tax-deductible
Only null% goes to programs Strong reserves Declining revenue
Gustavus & Louise Pfeiffer is a 501(c)(3) organization based in Wilmington, Delaware, registered in 1952, with $1,647,953 in FY2024 revenue. CharityIndex grades it C+.
Foundation Source 501 Silverside Rd, Wilmington, DE, 19809 EIN 13-6086299 Since 1952
Revenue (FY2024)
$1.6M
▲ 76.5% vs prior year
Expenses (FY2024)
$849K
Net assets
$19.5M
Employees
—
CharityIndex rating
One independent A+ to F grade from four published criteria, each scored separately from IRS filings and combined by weight.
C+
—Program efficiency40% of the ratingNo expense breakdown in filings
Measures how much of every dollar spent actually reaches programs, plus what it costs to raise $100 of donations. The worse of the two measures sets the letter (85%+ to programs is an A; under $15 to raise $100 is an A), averaged over the three most recent filings. Not scored for Gustavus & Louise Pfeiffer— this filing type doesn't report it, and the rating simply skips it (never counts it against the organization). See the exact thresholds →
B+Financial health25% of the rating275 mo reserves · +48% margin
Measures whether the organization is built to last: how many months its reserves would cover expenses (3+ months earns an A-range score, but hoarding 5+ years of budget is capped) and whether it runs a surplus or a deficit. For Gustavus & Louise Pfeiffer: 275 mo reserves · +48% margin earns a B+ on this criterion. See the exact thresholds →
—Governance25% of the ratingNot reported in this filing type
Checks how the organization is run, from its own Form 990: an independent board majority, a board of five or more, conflict-of-interest, whistleblower and document-retention policies, and independently audited financials. The share of disclosed checks that pass sets the letter. Not scored for Gustavus & Louise Pfeiffer— this filing type doesn't report it, and the rating simply skips it (never counts it against the organization). See the exact thresholds →
DTransparency10% of the rating1 of 5 disclosure signals
Counts five disclosure signals: a recent filing, a mission statement, program descriptions, a listed website, and the full expense breakdown. More disclosure, better letter. For Gustavus & Louise Pfeiffer: 1 of 5 disclosure signals earns a D on this criterion. See the exact thresholds →
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Contact & location
- Address
- Foundation Source 501 Silverside Rd, Wilmington, DE, 19809
- City
- Wilmington
- State
- Delaware
- Category
- —
- Subcategory
- —
Financial trends
Revenue grew from $1.4M (FY2014) to $1.6M (FY2024) across 7 reported years.
Financial snapshot
Financial health & position (FY2024)
Liabilities $121KNet assets $19.5M
Operating margin
48.5%
Revenue exceeded expenses in the latest fiscal year.
Total assets
$19.6M
Total liabilities
$121K
Net assets
$19.5M
Financials by year
| Fiscal year | Revenue | Expenses | Net assets | Total assets | Form |
|---|---|---|---|---|---|
| 2024 | $1,647,953▲76.5% | $849,467▲351% | $19,489,453▲9.7% | $19,610,601▲9.8% | 990PF |
| 2023 | $933,643▼25.2% | $188,163▼68.5% | $17,766,637▲22.2% | $17,863,505▲15.1% | 990PF |
| 2022 | $1,247,468▼64.4% | $596,765▼87.2% | $14,538,133▼19.0% | $15,514,522▼19.5% | 990PF |
| 2021 | $3,508,351▲53.0% | $4,671,757▲79.0% | $17,938,712▼8.1% | $19,275,018▼11.6% | 990PF |
| 2020 | $2,292,341▲8.8% | $2,609,989▲371% | $19,514,801▼12.0% | $21,798,051▼11.1% | 990PF |
| 2015 | $2,106,760▲49.1% | $554,564▼91.4% | $22,174,157▼2.3% | $24,513,142▼12.9% | 990PF |
| 2014 | $1,413,327 | $6,449,374 | $22,700,255 | $28,142,814 | 990PF |
Original Form 990 PDFs (the Form column) are served by ProPublica Nonprofit Explorer, as filed with the IRS. Create a free account to download the CSV report.
Frequently asked questions
- Is Gustavus & Louise Pfeiffer a legitimate nonprofit?
- Yes. Gustavus & Louise Pfeiffer is a 501(c)(3) organization registered with the U.S. Internal Revenue Service under EIN 13-6086299, based in Wilmington, Delaware. Donations are tax-deductible.
- What is Gustavus & Louise Pfeiffer's EIN?
- Gustavus & Louise Pfeiffer's Employer Identification Number (EIN) is 13-6086299.
- How much revenue does Gustavus & Louise Pfeiffer report?
- Gustavus & Louise Pfeiffer reported $1,647,953 in total revenue on its fiscal year 2024 IRS Form 990 filing.
- What financial grade does Gustavus & Louise Pfeiffer have?
- CharityIndex grades Gustavus & Louise Pfeiffer C+, based on financial health (reserves and operating margin).
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Data for Gustavus & Louise Pfeiffer (EIN 13-6086299) comes from the IRS Business Master File and e-filed Form 990 returns, via CharityIndex. Figures reflect what the organization reported to the IRS for each fiscal year.